Set to be launched 4Q 2007 and running S60v3 FP1, the Nokia N81 is a slider-followup to the N91 8GB Music Edition. It is quad-band EDGE with 2100 HSDPA (yeah, you know what that means), WiFi (b/g w/ uPnP), BT 2.0 with A2DP, and a 3.5mm slot. 

It also has "dedicated music and gaming keys," though I was unable to locate them in the photos. It also mentions a "Navi Wheel", but I'm unable to see that, as well. More details and a size comparison after the break.  Other features are as follows: 
Form factor: slide 
 
Dimensions: 102 x 50 x 17.9 mm 
 
Weight: ~ 140g 
 
Memory: 8GB internal flash memory 
 
Music Playback time: up to 12,5 hours 
 
Gaming time: up to 3-4 hours 
 
Talk time: up to 3-4 hours (3G)/3-4 hours(GSM) 
 
Standby time: up to 15 days 
 
Main Display: 2.4"QVGA 240x320, 16M colors 
 
Main Camera: 2Mpix 
 
Second Camera: CIF 
 
It will be one of the N-gage launch devices, having dedicated gaming keys. I was unable to get any information regarding planned price or battery, unfortunately. Frankly, I'm somewhat underwhelmed by this one. I mean, from the specs, it's really little more than an N91 in a different form factor. What do you think? Do you like the key layout, with the music keys "embedded" in the d-pad sort-of? I'm personally a HUGE fan of the slider form factor, but still can't see myself picking this one up

The N82 is designed for style, but packing the features to make it worth the $$. Still running S60v3 FP1, the N82 lengthens the life-span of the S60v3 FP1 platform, and should be available in Q4 2007. It is targeted towards "tech-stylists 20-35," with a female skew, but not enough to dissuade males of its power. Full Specs: 
Dimensions: 112 x 50.2 x 17.3 mm  
 
Weight: 120 g [Target] 
 
Memory: Up to 100 MB in-build, support for hot swappable MicroSD card (1GB in-box) 
 
Talk time: GSM: 280min, WCDMA: 180min (Target) 
 
Standby time: GSM: 270hrs WCDMA: 250hrs (Target) 
 
Display Specification 
Main Display: 2.4"QVGA 240x320, 16M colors 
 
Camera Specifications 
5MPix, Autofocus, up to 20 x digital zoom. Real Xenon flash. Integrated camera protection 
 
Secondary camera: CIF